Zhejiang Ziguang Electrical Company owns series production lines of 3.6-72.5kV indoor and outdoor circuit breakers, load switches,and vacuum interrupter contacts. The products have features of serialization, miniaturization, and specialization, etc, which is widely used in Electric power, petroleum, mining, chemical and other fields.
Vacuum Interrupter
|
No. |
Item |
Unit |
Value |
||||||
|
1 |
Rated voltage |
Kv |
12 |
40.5 |
72.5 |
126 |
|||
|
2 |
Rated current |
A |
630 |
2500 |
2500 |
2000 |
|||
|
3 |
Rated frequency |
Hz |
50 |
80 |
50 |
50 |
|||
|
4 |
Short time power frequency withstand voltage(1min) |
kV |
42 |
118 |
160 |
230 |
|||
|
5 |
Lightning impulse withstand voltage |
kV |
75 |
215 |
380 |
550 |
|||
|
6 |
Rated short circuit breaking current |
kA |
20 |
31.5 |
31.5 |
40 |
|||
|
7 |
Rated peak withstand current |
kA |
50 |
80 |
80 |
100 |
|||
|
8 |
Rated short circuit making current |
Ka |
50 |
80 |
80 |
100 |
|||
|
9 |
Rated short time withstand current |
kA |
20 |
31.5 |
31.5 |
40 |
|||
|
10 |
Rated duration of short circuit |
S |
4 |
4 |
4 |
4 |
|||
|
11 |
Switching operations of rated short circuit switching current |
Times |
30 |
30 |
20 |
30 |
|||
|
12 |
Mechanical life |
Times |
10000 |
10000 |
10000 |
10000 |
|||
|
13 |
Closing force due to bellow and atmosphere |
N |
80±30 |
150±50 |
300±50 |
300±50 |
|||
|
14 |
Force required to hold contacts open at full stroke |
N |
150±50 |
250±50 |
420±100 |
550±100 |
|||
|
15 |
Time-limited circuit resistance at rated compressive force |
μΩ |
≤30 |
≤80 |
≤100 |
≤60 |
|||
|
16 |
Contact limit erosion |
Mm |
3 |
3 |
4 |
4 |
|||
|
17 |
Gas pressure inside vacuum interrupter |
Pa |
≤1.33×10-3 |
||||||
|
18 |
Weight of moving parts |
Kg |
0.52 |
2.5 |
7.5 |
11.5 |
|||
|
19 |
Weight of vacuum interrupter |
Kg |
1.60 |
8.28 |
19.5 |
26 |
|||
